<PAGE>
                                                                    EXHIBIT 10.1

REVISED SCHEDULE  B

PART I - THE SCHEDULE
SECTION 8 - SUPPLIES OR SERVICES AND PRICES/COSTS
OPTION YEAR II - FY-99 (REVISED BY P00015)
PART A - INDEFINITE DELIVERY/INDEFINITE QUANTITY - EAST COAST

N00019-96-D-2047

<TABLE>
<CAPTION>

CLIN      SUPPLIES/SERVICES                                                QTY       UNIT        UNIT PRICE         AMOUNT

<S>       <C>                                               <C>            <C>        <C>         <C>             <C>
0201      PROP AIC, ASAC, TRACK, FERRY UTILITY MISSIONS

0201AA    Guaranteed Flight Hours                                          450        FH          $1,009.52       $454,329.00
0201AB    Level I Excess Flight Hours                       EST            100        FH            $398.62        $39,862.00
0201AC    Level II Excess Flight ,-Hours                    EST            100        FH            $398.62        $39,862.00

0202      JET AIC, TRACK, FERRY, UTILITY MISSIONS

0202AA    Guaranteed Flight Hours                                        2,400        FH          $1,271.52     $3,051,388.00
0202AB    Level I Excess Flight Hours                       EST            600        FH            $701.62       $420,972.00
0202AC    Level II Excess Flight Hours                      EST            200        FH            $701.52       $140,324.00

0203      JET AIC, TRACK FERRY, UTILITY,MISSIONS (LEAR 35 or 36)

0203AA    Guaranteed Flight Hours                                          190        FH          $2,427.52       $461,247.80
0203AB    Level I Excess Flight Hours                       EST            400        FH            $694.62       $277,848.00
0203AC    Level II Excess Flight Hours                      EST            450        FH            $694.62       $312,579.00
0203AD    Level III Excess Flight Hours                     EST            450        FH            $694.52       $312,579.00

0204      TOW MISSIONS BASIC (LEAR 35 or 36)

0204AA    Guaranteed Flight Hours                                          500        FH          $3,167.52     $1,583,810.00
0204AB    Level I Excess Flight Hours                       EST            200        FH            $962.52       $192,524.00
0204AC    Level II Excess Flight Hours                      EST            100        FH            $801.62        $80,162.00

0205      TOW MISSIONS BASIC - GFE TARGET/BANNERS (LR 35 or 36)

0205AA    Guaranteed Flight Hours                                          100        FH          $2,132.52       $213,262.00
0205AB    Level I Excess Flight Hours                       EST            100        FH            $867.62        $86,762.00
0205AC    Level II Excess Flight Hours                      EST             50        FH            $867.62        $43,381.00

0206      TOW MISSIONS SPECIAL (LEAR 35 or 36)

0206AA    Estimated Flight Hours                            EST             40        FH          $2,634.52       $105,384.80

</TABLE>


<PAGE>

REVISED SCHEDULE B

<TABLE>
<CAPTION>

CLIN      SUPPLIES/SERVICES                                                QTY       UNIT        UNIT PRICE         AMOUNT

<S>       <C>                                               <C>            <C>        <C>         <C>             <C>
0207      EW MISSIONS (LEAR 35 OR 36)

0207AA    Guaranteed Flight Hours                                          700        FH          $1,825.62       $1,277,934.00
0207AB    Level I Excess Flight Hours                       EST            450        FH            $518.62         $233,379.00
0207AC    Level II Excess Flight Hours                      EST            450        FH            $468.62         $210,879.00
0207AD    Level III Excess Flight Hours                     EST            450        FH            $367.62         $165,429.00

0208      SPECIAL EW SYSTEMS MISSIONS-GFE INTERNAL EW
          EQUIPMENT AND/OR EXTERNAL PODS (LEAR 35 OR 36)


0208AA    Guaranteed Flight Hours                                          120        FH          $2,828.62         $339,434.40
0208AB    Level I Excess Flight Hours                       EST            300        FH          $2,219.62         $665,886.00
0208AC    Level II Excess Flight Hours                      EST            450        FH            $716.62         $322,479.00

PART B - REQUIREMENTS -  EAST COAST

0209      JET AIC, TRACK, FERRY, UTILITY MISSIONS                          175        FH          $1,509.62         $264,183.50
0210      JET AIC, TRACK, FERRY UTILITY MISSIONS
          JACKSONVILLE, FL                                                 500        FH          $1,003.62         $501,810.00
0211      JET AIC, TRACK. FERRY, UTILITY MISSIONS
          ROOSEVELT ROADS P R (LEAR 35 or 36)                              250        FH          $1,724.62         $431,155.00
0212      RESERVED
0213      JET FERRY UTILITY -WITH EXTERNALLY MOUNTED
          EQUIPMENT (LEAR 35 or 36)                                        200        FH          $1,065.62         $213,124.00
0214      TOW MISSIONS BASIC - ROOSEVELT ROADS, PR
          (LEAR 35 or 36)                                                  130        FH          $2,140.62         $278,230.50
0215      TOW MISSIONS BASIC - GFE TARGETS/BANNERS
          ROOSEVELT ROADS PR (LEAR 35 or 36)                                50        FH          $1,920.62          $96,031.00
0216      RESERVED
0217      EW MISSIONS - ROOSEVELT ROADS. PR (LEAR 35 or 36)                250        FH          $1,751.62         $437,905.00
0218      SPECIAL EW SYSTEMS MISSIONS - LEAR 36 TEST
          BED/EW PLATFORM                                                  475        FH          $2,219.52       $1,054,319.50

PART C - COST REIMBURSABLE ITEMS - EAST COAST

0219      SPECIAL FERRY OF LEAR 36 TO HONOLULU HI
          FROM EAST COAST                                                    1        Lot         $XXXXXXX             $XXXXXXX
02    20  SPECIAL FERRY OF LEAR 36 TO ATSUKI, JAPAN
          FROM EAST COAST                                                    1        Lot         $XXXXXXX             $XXXXXXX

</TABLE>



<PAGE>
REVISED SCHEDULE B

N0001 9-96-D-2047

PART D - INDEFINITE DELIVERY/INDEFINITE QUANTITY - WEST COAST

<TABLE>
<CAPTION>

CLIN      SUPPLIES/SERVICES                                                QTY       UNIT        UNIT PRICE         AMOUNT

<S>       <C>                                               <C>            <C>        <C>         <C>             <C>
0221      JE T AIC, TRACK, FERRY, UTILITY MISSIONS

0221AA    Guaranteed Flight Hours                                          2,400      FH          $1,271.62       $3,051,888.00
0221AB    Level I Excess Flight Hours                       EST              450      FH            $729.62         $328,329.00
0221AC    Level II Excess Flight Hours                      EST              150      FH            $729.62         $109,443.00

0222      TOW MISSIONS BASIC (LEAR 35 or 36)

0222AA    Guaranteed Flight Hours                                            300      FH          $3,121.62         $936,486.00
0222AB    Level I Excess Flight Hours                       EST              200      FH            $922.62         $184,524.00
0222AC    Level II Excess Flight Hours                      EST              150      FH            $922.62         $107,793.00

0223      EW MISSIONS (LEAR 35 or 36)

0223AA    Guaranteed Flight Hours                                            550      FH          $1,837.62       $1,194,453.00

0223AB    Level I Excess Flight Hours                       EST              450      FH            $518.62         $233,379.00 
0223AC    Level II Excess Flight Hours                      EST              450      FH            $468.62         $210,879.00

PART E - COST REIMBURSABLE ITEMS - WEST COAST

0224      PROP ASAC, TRACK, UTILITY MISSIONS                                   1      Lot                            $XXXXXXXXX
0225      JET AIC TRACK, FERRY, UTILITY MISSIONS
          WHIDBEY ISLAND WA                                                    1      Lot                            $XXXXXXXXX
0226      JET AIC TRACK, FERRY, UTILITY MISSIONS
          (LEAR 35 or 36)                                                      1      Lot                            $XXXXXXXXX
0227      JET FERRY, UTILITY - WITH EXTERNAL EQUIPMENT
          (LEAR 35 or 36)                                                      1      Lot                            $XXXXXXXXX
0228      TOW MISSIONS - BASIC GFE BANNER (LEAR 35 or 36)                      1      Lot                            $XXXXXXXXX
0229      TOW MISSIONS SPECIAL - TLX (LEAR 35 or 36)                           1      Lot                            $XXXXXXXXX
0230      EW MISSIONS - GFE/CFE PODS (LEAR 35 or 36)                           1      Lot                            $XXXXXXXXX
0231      SPECIAL EW SYSTEMS MISSIONS - GFE INTERNAL
          EQUIPMENT AND/OR EXTERNAL PODS (LEAR 35 or 36)                       1      Lot                            $XXXXXXXXX
0232      SPECIAL EW SYSTEMS MISSIONS - LEAR 36 TEST BED/
          EW PLATFORM                                                          1      Lot                            $XXXXXXXXX
0233      SPECIAL FERRY OF LEAR 26 TO HONOLULU HI
          FROM WEST COAST                                                      1      Lot                            $XXXXXXXXX

0234      SPECIAL FERRY OF LEAR 36 TO ATSUKI JAPAN
          FROM WEST COAST                                                      1      Lot                            $XXXXXXXXX

</TABLE>


<PAGE>
REVISED SCHEDULE 3
    PART F - COST REIMBURSABLE MIDPAC/WESTPAC

N0001 9-96-D-2047

<TABLE>
<CAPTION>

CLIN      SUPPLIES/SERVICES                                                QTY       UNIT        UNIT PRICE         AMOUNT

<S>       <C>                                               <C>            <C>        <C>         <C>             <C>
M DPAC

0235      JET AIC, TRACK, FERRY, UTILITY, TOW MISSIONS,
          BASIC GFE CFE, EW MISSIONS (LEAR 36)                               1        LOT         $1,038,336.00      $XXXXXXX
0236      SPECIAL FERRY OF LEAR 36 TO ATSUKI, JAPAN
          FROM HONOLULU, HI                                                  1        LOT           $101,237.76      $XXXXXXX

WESTPAC

0237 ._   JET AIC, TRACK, FERRY UTILITY TOW MISSIONS,
          BASIC GFE/CFE EW MISSIONS (LEAR 36)                                1        LOT         $1,168,128.00       $XXXXXX

PART G - REQUIREMENTS

0238      SPECIAL. MISS,_N EQUIPMENT (SME)/EW OPERATOR      2,000         MH                             $62.00   $124,000,00
0239      SPECIAL REQUIREMENTS PILOTS, OTHER THAN FLYING      600         MH                             $62.00    $49,600.00
0240      GFE EQUIPMENT INSTALLERS/GFE MAINTENANCE
          PERSONNEL                                         5,000         MH                             $49.00   $245,000.00

PART H. COST REIMBURSABLE ITEMS

0241      TRAVEL/PER DIEM                                                    1        LOT           $324,480.00   $356,928.00
0242      MATERIAL                                                           1        LOT           $865,280.00   $951,808.00
0243      SITE ACTIVATION/DEACTIVATION-EAST/WEST COAST                       1        LOT             $7,571.00      $XXXXXXX
0244      SITE RELOCATION - EAST/WEST COAST
O244AA    SITE RELOCATION - EAST COAST                                       1        LOT                  XXXX    $85,503.00
0245      SITE ACTIVATION - MIDPAC/WESTPAC                                   1        LOT             $7,571.00      $XXXXXXX
O246      SITE RELOCATION - MIDPAC/WESTPAC                                   1        LOT             $4,326.00      $XXXXXXX
0247      ADMINISTRATIVE/TECHNICAL DATA IN ACCORDANCE
          WITH DD FORM 1423 -EXHIBIT A                                       1        LOT                   NSP           NSP
0248      ADDITIONAL SUPPORT AIRCRAFT
0248AA    EAST COAST                                                         1        LOT           $432,640.00      $XXXXXXX
0248AB    WEST COAST                                                         1        LOT           $432,640.00      $XXXXXXX

</TABLE>


<PAGE>
PART I -REQUIREMENTS - AIRCRAFT MODIFICATIONS

<TABLE>
<CAPTION>

CLIN      SUPPLIES/SERVICES                                                QTY       UNIT        UNIT PRICE         AMOUNT

<S>       <C>                                               <C>            <C>        <C>         <C>             <C>
0249      AIRCRAFT MODIFICATIONS (SPECIAL EQUIPMENT)

0249AA    BELLY RADOME                                                       1        EACH             $0.00               $0.00

0249AB    ANTI-COLLISION LIGHT (SB 35/36 33-9)                               1        EACH             $0.00               $0.00

0249AC    WING HARDPOINTS                                                    1        EACH             $0.00               $0.00

0249AD    EJECTOR RELEASE                                                    1        EACH             $0.00               $0.00

0249AE    INVERTORS                                                          1        EACH             $0.00               $0.00

0249AF    NOSE RADOME                                                        1        EACH             $0.00               $0.00

0249AG    TAIL RADOME                                                        1        EACH             $0.00               $0.00

0249AH    AN/APX-72 OR APX-100 PROVISIONS INCLUDING 2 GFE
          ANTENNAS (JET AIRCRAFT)                                            1        EACH         $3,450.00           $3,450.00

0249AJ    AN/APX-72 OR APX-100 PROVISIONS INCLUDING 2 GFE
          ANTENNAS (LEAR 30 SERIES AIRCRAFT)                                 1        EACH         $3,450.00           $3,450.00

0249AK    STORMSCOPE                                                         1        EACH        $13,800.00          $13,800.00

0249AL    UPGRADE AIR CONDITIONING                                           1        EACH             $0.00               $0.00

0249AM    ADDITIONAL UHF TRANSCEIVER (225-400 MHZ) WITH GFE CRYPTO
          CAPABILITY (JET AIRCRAFT)                                          1        EACH         $5,750.00           $5,750.00

0249AN    ADDITIONAL UHF TRANSCEIVER (225-400 MHZ) WITH GFE CRYPTO
          CAPABILITY (LEAR 30 SERIES AIRCRAFT)                                1        EACH         $8,625.00           $8,625.00

                           TOTAL AMOUNT FOR ALL CLINS.......................................................      $22,514,093.60

</TABLE>